Vanderbilt Pathology Laboratory Services
Test Directory
CORTISOL BLOOD (COR)
Department: ChemistryTest Synonym(s): COR
CPT Codes: 82533
Methodology: Competitive Binding Immunoenzymatic Assay
Reference Range: 8-9 AM: 10.4-26.4 UG/dL, 11 PM: 25% OF 8-9 AM Level, Stimulation: 1 hour post 0.25 mg Cortrosyn, or day 3-4: >20 UG/dL, Dexamethasone suppression: overnight (1 mg): <5 @ 8 AM, Low-dose (0.5 mg Q 6 hours, days 3-4):<50% baseline, day 4; <5 UG/dL day 5. High-dose (2 mg Q 6 hours days 5-6): <10 UG/dL, day 6
Tube Type: Light green PST (Lithium Heparin with gel) tube - 4.5 mL
Specimen: Plasma, Serum
Alternate Specimen: Red top tube - 5 mL; EDTA
Pediatric Requirements: 2 microtainers
Volume: 3 mL plasma
Minimum Volume: 0.7 mL plasma
Temperature: Centrifuge immediately and store at 2-8 degrees C. If not performed within 24 hours, freeze at -20 degrees C
Stability: < 3 days at 2 - 8ºC; 6 months at -20ºC
Reasons for Rejection: Hemolysis; improper collection
Days Performed: Daily
Times Performed: Continuous
TAT: STAT: 1 hour; ROUTINE: 2 hours after receiving in lab
Special Instructions: Draw between 8-9 AM and 11 PM
Search Tests
Search Help
Search Options for the Test Directory:
1. Enter the test name in the Keyword search field.
Hint: You can also enter any part of the test name to expand the search.
(Example: you can type "west" or "sed" or "rate" to find Westergren Sedimentation Rate)
2. Enter the Vanderbilt Test Code, if known.
3. Choose one of the letter boxes to display a list of all test names and keywords starting with that letter.
If you are unable to find a test in our directory, please contact VPLS at
1-800-551-5227 or e-mail emily.k.thompson@vanderbilt.edu.
